Madeleine Swann (Léa Seydoux) wears an Omega Constellation watch in the movie SPECTRE (2015).
Swann can be spotted wearing the watch during her first meeting with James Bond in the Hoffler Klinik.
There are many variations of the Constellation, but the exact model of the watch worn in SPECTRE is the Omega Constellation Quartz. According to OmegaBondWatches the exact model is the 27mm, ref: 123.10.27.60.05.001.
The watch has a mother-of-pearl dial with lines as hour markers and Roman numerals on the bezel. The VIII on the bezel is partly covered by the left 'Griffe' (as Omega calls them) on the bezel. The band has a small square gold Omega logo on the clasp.
This timepiece is powered by Omega’s calibre 1376 precision quartz movement.
This particular watch model is not produced anymore but you can see the original product page on the Omega website here, or find used models on places like Chrono24, eBay or JomaShop.
Omega watches have appeared in James Bond movies since 1995, not only on the wrist of 007 but also on some of his colleagues and friends, see an overview here.
With thanks to Lorenzo Anselmo& Raynor Mendoza and mrsomegabondwatches for the first post about this watch